v4.85.1.0 Beta for Linux RPM Available

Kevin Miller kevin.miller at juneau.org
Wed Feb 18 22:56:05 GMT 2015

Regardless of motive, we all appreciate your work in keeping MailScanner alive!

Re: the Postfix integration, Jules mentioned the disagreement between him and Venema on more than on occasion.  The issue was one of efficiency, IIRC.  MailScanner batches the virus and spam scanning on up to 30 messages at once (or some such).  Doing it with a milter is going to spawn a scan for each inbound message taking more system resources.  Or so the theory goes.  I don't have any imperical data to substantiate the practical difference on a high volume mail server, but I always agreed with Jules because 1, he's a heck of a nice guy, and 2, I used sendmail with MailScanner.  Gotta root for the home team after all. ;-)  I got the impression that it was a bit of pride and a "not invented here" attitude on the postfix side but I've never had any interaction with Venema so that may not be the case at all.

I'm going to try Postfix on my new gateways, mostly because it purports to do LDAP lookups against AD for recipient verification.  Exchange 2013 won't properly let me do a call-ahead with smf-sav so I need some sort of LDAP integration to cull out the non-existant users at MTA time to avoid back-scatter.

If you do attempt to implement a solution after the fashion that Venema recommends, it would be instructive to test it against a stock MailScanner installation, capturing time and load statistics.  It may be a wash, or it may be that there's a significant difference.  I burn through maybe 10K messages a day, with around 650 users so my servers probably wouldn't know the difference.  I'd imagine that it would make a big difference however for servers that are doing multi-million messages a day...

Kevin Miller
Network/email Administrator, CBJ MIS Dept.
155 South Seward Street
Juneau, Alaska 99801
Phone: (907) 586-0242, Fax: (907) 586-4500
Registered Linux User No: 307357 

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Jerry Benton
> Sent: Wednesday, February 18, 2015 1:15 PM
> To: MailScanner discussion
> Subject: Re: v4.85.1.0 Beta for Linux RPM Available
> > On Feb 18, 2015, at 1:46 PM, Peter Bonivart <bonivart at opencsw.org>
> wrote:
> >
> > That's still a great idea, I remember it from back in the day.
> > However, I think it's high time to close the wish list for this long
> > awaited release and start filling it for the next one or we may have
> > to wait a few more years. :)
> >
> I agreed to take over as lead for the project because my Mailborder
> business depends on the success of MailScanner. I have developed an
> affinity for things like food and shelter, so it is deeply in my
> interest that the MailScanner project succeed.
> -
> Jerry Benton
> www.mailborder.com
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